Complete set: Intro to C - Bill Buchanan

3.3 Reading from a CSV file
One of the best ways to transfer information between applications is to save the data
separated by commas. This format is known as CSV (Comma Separated Variables).
An example format is:
1,5,6,7,4,5,6,7,10,5,4,3,2,1
For this we can read the file one line at a time, and then split the string using the
Split() method. This can be contained with the foreach statement, to parse each part
of the split text. The code which fills the array v is:
do
{
text=reader.ReadLine();
if (text==null) break;
foreach (string substring in text.Split(','))
{
v[i]=Convert.ToDouble(substring);
i++;
}
} while (text != null);
Program 3.5 shows the complete code to read the data from the CSV file (using the
fillData()), and display it to the screen (using the showData() method).
Program 3.5: Program3_5_ArrayGenerateDataWithCSV
using System;
using System.IO;
duction to .NET
Intro
namespace ConsoleApplication2
{
class ArrayExample02
{
const int ARRAYLIMIT=100;
static void fillData(double[] v)
{
int i=0;
FileInfo theSourceFile = new FileInfo("..\\..\\test.csv");
StreamReader reader = theSourceFile.OpenText();
string text;
do
{
text=reader.ReadLine();
if (text==null) break;
foreach (string substring in text.Split(','))
{
v[i]=Convert.ToDouble(substring);
i++;
}
} while (text != null);
Agilent .NET Course: Arrays and Collections 8